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genesis.go
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genesis.go
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package simulation
// DONTCOVER
import (
"math/rand"
"time"
"github.com/cosmos/cosmos-sdk/types/module"
simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
"github.com/desmos-labs/desmos/v6/x/posts/types"
subspacessim "github.com/desmos-labs/desmos/v6/x/subspaces/simulation"
subspacestypes "github.com/desmos-labs/desmos/v6/x/subspaces/types"
)
// RandomizeGenState generates a random GenesisState for posts
func RandomizeGenState(simState *module.SimulationState) {
// Read the subspaces data
subspacesGenesisBz := simState.GenState[subspacestypes.ModuleName]
var subspacesGenesis subspacestypes.GenesisState
simState.Cdc.MustUnmarshalJSON(subspacesGenesisBz, &subspacesGenesis)
params := types.NewParams(RandomMaxTextLength(simState.Rand))
posts := randomPosts(simState.Rand, subspacesGenesis.Subspaces, simState.Accounts, params)
subspacesDataEntries := getSubspacesData(posts)
attachments := randomAttachments(simState.Rand, posts)
postsDataEntries := getPostsData(posts, attachments)
activePolls := getActivePollsData(attachments)
userAnswers := randomUserAnswers(simState.Rand, attachments, simState.Accounts)
postOwnerTransferRequests := randomPostOwnerTransferRequests(simState.Rand, posts, simState.Accounts)
// Save the genesis
postsGenesis := types.NewGenesisState(
subspacesDataEntries,
posts,
postsDataEntries,
attachments,
activePolls,
userAnswers,
params,
postOwnerTransferRequests,
)
simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(postsGenesis)
}
// randomPosts returns randomly generated genesis posts
func randomPosts(r *rand.Rand, subspaces []subspacestypes.Subspace, accs []simtypes.Account, params types.Params) (posts []types.Post) {
if len(subspaces) == 0 {
return nil
}
postsNumber := uint64(r.Intn(100))
posts = make([]types.Post, postsNumber)
for index := uint64(0); index < postsNumber; index++ {
subspace := subspacessim.RandomSubspace(r, subspaces)
posts[index] = GenerateRandomPost(r, accs, subspace.ID, subspacestypes.RootSectionID, index+1, params)
}
return posts
}
// getSubspacesData uses the given posts to returns a SubspaceDataEntry slice
func getSubspacesData(posts []types.Post) (entries []types.SubspaceDataEntry) {
if len(posts) == 0 {
return nil
}
subspacesMaxPostID := map[uint64]uint64{}
for _, post := range posts {
maxPostID, ok := subspacesMaxPostID[post.SubspaceID]
if !ok || post.ID > maxPostID {
subspacesMaxPostID[post.SubspaceID] = post.ID
}
}
entries = make([]types.SubspaceDataEntry, len(subspacesMaxPostID))
var i = 0
for subspaceID, maxPostID := range subspacesMaxPostID {
entries[i] = types.NewSubspaceDataEntry(subspaceID, maxPostID+1)
i++
}
return entries
}
// getPostsData uses the given posts and attachments to return a PostDataEntry slice
func getPostsData(posts []types.Post, attachments []types.Attachment) (entries []types.PostDataEntry) {
if len(posts) == 0 {
return nil
}
type postReference struct {
SubspaceID uint64
PostID uint64
}
// Get the max attachment id for each post that has an attachment
maxAttachmentIDs := map[postReference]uint32{}
for _, attachment := range attachments {
key := postReference{SubspaceID: attachment.SubspaceID, PostID: attachment.PostID}
maxAttachmentID, ok := maxAttachmentIDs[key]
if !ok || maxAttachmentID < attachment.ID {
maxAttachmentIDs[key] = attachment.ID
}
}
entries = make([]types.PostDataEntry, len(posts))
for i, post := range posts {
key := postReference{SubspaceID: post.SubspaceID, PostID: post.ID}
maxAttachmentID, ok := maxAttachmentIDs[key]
if !ok {
maxAttachmentID = 0
}
entries[i] = types.NewPostDataEntry(post.SubspaceID, post.ID, maxAttachmentID+1)
}
return entries
}
// randomAttachments returns randomly generated attachments
func randomAttachments(r *rand.Rand, posts []types.Post) (attachments []types.Attachment) {
if len(posts) == 0 {
return nil
}
attachmentsNumber := uint32(r.Intn(50))
attachments = make([]types.Attachment, attachmentsNumber)
for index := uint32(0); index < attachmentsNumber; index++ {
post := RandomPost(r, posts)
attachments[index] = GenerateRandomAttachment(r, post, index+1)
}
return attachments
}
// getActivePollsData gets the active polls data from the given attachments slice
func getActivePollsData(attachments []types.Attachment) []types.ActivePollData {
var data []types.ActivePollData
for _, attachment := range attachments {
if poll, ok := attachment.Content.GetCachedValue().(*types.Poll); ok && poll.EndDate.After(time.Now()) {
data = append(data, types.NewActivePollData(
attachment.SubspaceID,
attachment.PostID,
attachment.ID,
poll.EndDate,
))
}
}
return data
}
// randomUserAnswers returns randomly generated user answers
func randomUserAnswers(r *rand.Rand, attachments []types.Attachment, accs []simtypes.Account) (answers []types.UserAnswer) {
if len(attachments) == 0 {
return nil
}
// Get only the polls
var polls []types.Attachment
for _, attachment := range attachments {
if types.IsPoll(attachment) {
polls = append(polls, attachment)
}
}
if len(polls) == 0 {
return nil
}
answersNumber := r.Intn(50)
for index := 0; index < answersNumber; index++ {
attachment := RandomAttachment(r, polls)
answersIndexes := RandomAnswersIndexes(r, attachment.Content.GetCachedValue().(*types.Poll))
user, _ := simtypes.RandomAcc(r, accs)
answer := types.NewUserAnswer(attachment.SubspaceID, attachment.PostID, attachment.ID, answersIndexes, user.Address.String())
// Make sure there are no duplicated answers
if !containsAnswer(answers, answer) {
answers = append(answers, answer)
}
}
return answers
}
// containsAnswer tells whether the given answers slice contains an answer from the same user of the given one
func containsAnswer(answers []types.UserAnswer, answer types.UserAnswer) bool {
for _, item := range answers {
if item.SubspaceID == answer.SubspaceID && item.PostID == answer.PostID && item.PollID == answer.PollID && item.User == answer.User {
return true
}
}
return false
}
// randomPostOwnerTransferRequests returns randomly generated post owner transfer requests
func randomPostOwnerTransferRequests(r *rand.Rand, posts []types.Post, accs []simtypes.Account) (requests []types.PostOwnerTransferRequest) {
if len(posts) == 0 {
return nil
}
requestsNumber := r.Intn(len(posts))
for index := 0; index < requestsNumber; index++ {
post := RandomPost(r, posts)
receiver, _ := simtypes.RandomAcc(r, accs)
// Make sure the receiver does not match the sender
if receiver.Address.String() == post.Owner {
continue
}
request := types.NewPostOwnerTransferRequest(post.SubspaceID, post.ID, receiver.Address.String(), post.Owner)
// Make sure there are no duplicated requests
if !containsRequest(requests, request) {
requests = append(requests, request)
}
}
return requests
}
// containsRequest tells whether the given post owner transfer requests slice contains a post owner transfer request from the same id of the given one
func containsRequest(requests []types.PostOwnerTransferRequest, request types.PostOwnerTransferRequest) bool {
for _, item := range requests {
if item.SubspaceID == request.SubspaceID && item.PostID == request.PostID {
return true
}
}
return false
}